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WINDMILL. APPLICATION FILED n:c.1o.|91s.

Patented Aug; 26, 1919.

: STATES, PATENT OFFICE.

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1,314,232. m 1mm Patent Patented Aug. 26, 1919. Application died December 10, 191s. Serial No. 266,118. To all whom it may concern.- the upper arms andtie rods 9 connect the Be it known that I, Gomon Wiimz, a citi-.

zen of Germany, and resident of the borough of Manhattan, in the city and State of New York, have invented a new and useful Im rovement in Windmills, of which the follbwing is a specification.

One object of my invention is to provide a windmill in which the sails of the mud wheel are mounted will sw' into positions flatwlse-and edgewise te tie wind at opposite sides of t e wheel.

A further object is to provide, a yielding stop for the swinging movement of the sails so that when the wind becomes too strong the sails will swing sufiiciently to sp1ll the wind and if necessary will swing entirely past the sto to prevent the breaking of the parts, thus eepmg the speed of the wheel automatically below the danger point.

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v and lower hubs 3 and4 from A still further object is to provide a windmill of novel construction which will be re simple, stro and durable and in which the sails may e readily removedand A practical embodiment of my invention is represented in the accompanymg drawings, in which-- re 1 represents a windmill in top.

plan. a

Fig. 2 represents the same in side elevation, the support being shown in vertlcal central section.

Fig. 3 is an enlarged detail view of one portion of the whee Fig. 4 is a section taken in line IVIV of Fig. 3.

Fig. 5 is a section showing the relatlvely fixed cam of th yielding stop in top plan, and

Fi 6 is a section showing the relatively mova 1e cam in inverted plan.

The vertical shaft 1 is rotatably mounted the plane of the m the support 2 of the windmill.

The wind wheel is mounted to rotate with the vertical shaft 1, and comprises the upper which pro ect the airs of upper'and lower arms 5 and 6. In t e present instance I have shown four airs of these arms arranged at 90 apart. 0 or more vertical bars 7 connect each pair of upper and lower arms 6, 1n. the present instance I have shown two such vertical bars 7 for each pair of upper and lower arms. Tie rods 8 connect the outer ends of to feather, so that they.

outer ends of the lower arms 6.

0 make a more rigid wheel dia onal tie rods 10 connect the upper arms 5 with a hub 11, fixed to the vertical shaft 1 a distance above the hub 3. Y m

The sails 12 are hinged to swing about the vertical bars 7 each bar 7 has fixed thereon against relative movement upper and lower cams 13 and 14 which have steep inclines which co-act with steep inclines on upper and lower cams 15 and 16 rotatabl and vertically movable on said bar 7. pper and lower arms 17 and 18 project from the relatively movable cams 15 and 16 to which arms the top and bottom of the sail 12 is secured.

It is to be understood that the upper and lower cams 15 and 16 rest by avity on the upper and lower cams 13 and 14.

For exerting additional pressure on the cams 15 and 16 I provide expansion springs 19 and.20, the expansion spring 19 bein located between the top of the cam 15 an an adjusting nut 21. he spring 20 is interposed between the to of the cam 16 and an adjusting nut 22. T e tension of the spring 19 and 20 may thus be adjusted to suit different requirements.

The cams are so arranged and formed that the Sails 12 may have extended swinging movement around their vertical bars 7 without. interruption and a further swinging movement under undue wind pressure. This further swinging movement is accomplished by permittin the steep inclines of the relative y movab e inclines of the relatively fixe cams against the action of gravity and against the tension of the springs 19 and 20.

In operation under normal wind pressures, the sails 12 will present themselves flatwise to the wind at one side of the wheel, the sails being located substantially in the plane of their upper and lower arm 5 and 6. As the wheel revolves the sails are first thrown outwardly and then they present themselves edgewise to the wind as they reach a oint upon the 0 posite side of the wheel. llhe salls will then gradually approach their position parallel with their u per and lower arms as they return to their first mentioned position. These difi'erent positions are indicated -in Fig. 1 of the drawin If the wind pressure he too great the cams cams to ride nip-on the steep wind wheel having feathering salls arranged which form the yielding stops for the sails will permit the sails to yield sufiiciently to spill the wind and if necessary permit the sails to swing entirely past the stops thus serving to keep the speed of the wheel within the danger limits.

It is evident that various changes may be restorted to, in the form, construction and arrangement of the several arts without departing from the spirit an scope of my invention, and hence I do not intend to be limited to the deta'ls herein shown and described, but

What 1 claim is:

1. In a windmill, a horizontally rotating to swing into positions flatwise and edgewise to the wind on opposite sides of the wheel and relatively fixed and movable cams which coact to stop the swinging movement of the sails except under undue wind pressure.

2. In a windmill, a horizontally rotating wind wheel having feathering sails arran ed to swing on vertical axes into positions atwise and edgewise to the wind on opposite sides of the wheel, and relatively fixed and thereto,

movalble cams which 'coact to stop the swinging movement of he sails except under undue wind pressure. v

v 3. In a windmill, a horizontally rotating wind wheel having vertical bars, cams fixed thereto, cams-rotatably and vertically movable on said bars, sails carried by said last named cams, said fixed and movable cams coactin to limit the swinging movement of the sai 5 except under undue wind pressure. 4;, In a windmill, a horizontally rotating wind wheel having vertical bars, cams fixed cams rotatably and vertically movable on said bars, sails carried by said last named cams, said fixed and movable cams coacting to limit the swinging movement of the sails except under undue wind pressure, and means to adjust the amount of the re sistance of the sails to said swinging movement under undue wind pressure.

In testimony, that I claim the foregoing as my invention, I have signed my name,

this second day of December, 1918.

GOTTLOB wens 

